Naslov
Genetic Parameters for Number of Piglets Born Alive Using a Random Regression Model

Autori
Luković, Zoran ; Malovrh, Špela ; Gorjanc, Gregor ; Uremović, Marija ; Kovač, Milena

Izvornik
Agriculturae Conspectus Scientificus : Thematic Issue Animal Science (1331-7768) 68 (2003), 2/4; 105-108

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
random regresion; genetic parameters; litter size; pigs

Sažetak
A random regression model (RRM) was applied to estimate dispersion parameters for number of piglets born alive (NBA) from first to tenth parity. Random regressions on Legendre polynomials of standardized parity were included for common litter environmental, permanent environmental and additive genetic effects. Estimated phenotypic variance and variance components (ratios) for NBA changed over parities and differed between farms. Eigenvalues for additive genetic effect were calculated in order to detect the proportion of additive genetic variability explained with individual production curves of animals. Existence of the 10-20% genetic variability in the shape of the curves confirms a possibility for selection on persistency in litter size.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

Napomena
Rad priopćen na skupu: The 11th International Symposium Animal Science Days 2003 ; 23-26.2003 ; Poreč, Hrvatska

POVEZANOST RADA